9 Questions
What is the component that moves all the heads of a magnetic disk as a unit?
Disk arm
What is the term used when the head damages the magnetic surface of a disk?
Head crash
What is the time taken for the desired sector to rotate to the disk head called?
Rotational latency
What is the set of tracks that are at one arm position called?
Cylinders
What is the time taken to move the disk arm to the desired cylinder called?
Positioning time
What is the difference in rotation speed between a floppy disk and a hard disk drive?
Slower
What is the term used to describe the time taken for the desired sector to rotate to the disk head?
Rotational latency
What is the difference in design between a floppy disk and a hard disk drive in terms of rotation speed?
Floppy disks rotate faster
What is the component that sends the command placed into it, via messages to the disk controller?
Host controller
Study Notes
Magnetic Disk Components
- The actuator moves all the heads of a magnetic disk as a unit.
Disk Damage
- The term "crash" is used when the head damages the magnetic surface of a disk.
Disk Access Time
- The time taken for the desired sector to rotate to the disk head is called latency.
Disk Tracks
- A set of tracks that are at one arm position is called a cylinder.
Disk Seek Time
- The time taken to move the disk arm to the desired cylinder is called seek time.
Disk Rotation Speed
- Floppy disks have a slower rotation speed compared to hard disk drives.
- Hard disk drives have a faster rotation speed compared to floppy disks.
Disk Latency
- Latency refers to the time taken for the desired sector to rotate to the disk head.
Disk Design
- Floppy disks and hard disk drives differ in design, with hard disk drives having a faster rotation speed.
Disk Commands
- The command block is the component that sends the command placed into it, via messages to the disk controller.
Test your knowledge on magnetic disks with this quiz! From understanding how information is recorded on platters to knowing the components that make up a magnetic disk, this quiz covers it all. See if you can correctly identify the right answers and improve your knowledge on this important technology.
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